Yoroi Musha is an older-looking man with a long white beard. His Hero Costume is a full set of Japanese armour with a cape which he wraps around his torso. His helmet notably has one large horn pointing upwards.
Yoroi Musha is introduced during the announcement of the top hero rankings of the year's second semester. He muses that aside from the top 3, all the other ranks are determined simply by timing and luck. When asked to make a statement to the audience, Yoroi simply replies that his duty has not changed.
Yoroi Musha's Quirk is currently unknown. His armored appearance suggests that he fights in similar styles to that of a samurai, although this is not confirmed.